package operation;
import book.Book;
import book.BookList;
import java.util.Scanner;

public class DelOperation implements IOPeration {

    @Override
    public void work(BookList bookList) {
        System.out.println("删除图书！！！");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入你要删除的图书：");
        String name = scanner.nextLine();
        int pos=0;
        int currentSize=bookList.getUseSize();
        int i = 0;
        for (; i < currentSize; i++) {
            Book book=bookList.getBooks(i);
            if (book.getName().equals(name)) {
                pos=i;
                break;
            }
        }
        if(i==currentSize){
            System.out.println("没有你要删除的书！！");
        }
        for(;pos<currentSize-1;pos++){
            Book book=bookList.getBooks(pos+1);
            bookList.setBooks(pos,book);
        }
        bookList.setBooks(pos,null);
        bookList.setUseSize(currentSize-1);
    }
}

